<template>
  <view>
    <!-- 搜索 -->
    <search />

    <!-- 分类 -->
    <view class="category">
      <!-- 顶级分类 -->
      <view class="sup">
        <scroll-view scroll-y>
          <text 
		  v-for="(item,index) in categorys" 
		  :key="item.cat_id" 
		  :class="{active:index===activeIndex}"
		  @click="setActiveIndex(index)">
			{{item.cat_name}}
		  </text>
        </scroll-view>
      </view>
      <!-- 子级分类 -->
      <view class="sub">
        <scroll-view scroll-y>
          <!-- 封面图 -->
          <image src="http://static.botue.com/ugo/uploads/category.png" class="thumb"></image>
          <view class="children" v-for="item in subCategorys" :key="item.cat_id">
            <view class="title">{{item.cat_name}}</view>
            <!-- 品牌 -->
            <view class="brands">
              <navigator :url="`/subpkg/pages/list/index?query=${i.cat_name}`" v-for="i in item.children" :key="i.cat_id">
                <image :src="i.cat_icon"></image>
                <text>{{i.cat_name}}</text>
              </navigator>
            </view>
          </view>
        </scroll-view>
      </view>
    </view>
  </view>
</template>

<script>
import search from '@/components/search';
import {getGoodsCategoryList} from '@/api/index.js'
export default {
  components: {
    search
  },
  data(){
	  return {
		  categorys:[],
		  activeIndex:0
	  }
  },
  computed:{
	  subCategorys(){
		  if(this.categorys[this.activeIndex]){
			  return this.categorys[this.activeIndex].children
		  }
		  return []
	  }
  },
  onLoad() {
  	this.getCategoryData()
  },
  methods:{
	  // tab栏切换
	  setActiveIndex(index){
		  this.activeIndex=index
	  },
	  async getCategoryData(){
		  const {data} = await getGoodsCategoryList()
		  // console.log(data)
		  if(data.meta.status!==200){
		  	return uni.showToast({
		  		title:'数据请求失败',
		  		icon:'none'
		  	})
		  }
		  this.categorys=data.message
	  }
  }
};
</script>

<style scoped lang="scss">
scroll-view {
  height: 100%;
}

.category {
  display: flex;
  width: 100%;
  position: absolute;
  top: 100rpx;
  bottom: 0;

  .sup {
    width: 196rpx;
    background-color: #f4f4f4;

    text {
      display: block;
      height: 100rpx;
      text-align: center;
      line-height: 100rpx;
      font-size: 27rpx;
      color: #333;
      border-bottom: 1rpx solid #eee;

      &:last-child {
        border-bottom: none;
      }

      &.active {
        background-color: #fff;
        color: #ea4451;
        position: relative;

        &::before {
          content: '';
          display: block;
          width: 8rpx;
          height: 60rpx;
          transform: translateY(-50%);
          background-color: #ea4451;

          position: absolute;
          left: 0;
          top: 50%;
        }
      }
    }
  }

  .sub {
    flex: 1;
    padding: 20rpx 18rpx;

    .thumb {
      width: 100%;
      height: 180rpx;
    }

    .children {
      text-align: center;
      color: #333;

      .title {
        display: inline-block;
        margin: 40rpx 0 20rpx;
        font-size: 30rpx;

        &::before {
          content: '/';
          margin-right: 20rpx;
          color: #666;
        }

        &::after {
          content: '/';
          margin-left: 20rpx;
          color: #666;
        }
      }
    }

    .brands {
      display: flex;
      flex-wrap: wrap;

      navigator {
        width: 33%;
        margin-bottom: 20rpx;
      }

      image {
        width: 120rpx;
        height: 120rpx;
      }

      text {
        display: block;
        font-size: 24rpx;
      }
    }
  }
}
</style>
